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4n-1=7n+2
We move all terms to the left:
4n-1-(7n+2)=0
We get rid of parentheses
4n-7n-2-1=0
We add all the numbers together, and all the variables
-3n-3=0
We move all terms containing n to the left, all other terms to the right
-3n=3
n=3/-3
n=-1
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